Tamping-plug.



. UNITED STATES-1 RICHARD n. vestir, or tonno salaries, coton-nd, aissrenoitrronr FOURTH TO GEORGE S. --SANDERSONAND WALTER"SISNDERSONfOi DENVER, COLORADO.

Application Sled :Tune 6, 1.899.

saliti no. 719.568. (N mtas.) A

To aZZ whom it may coito-crit.- v

Be it known that I, RICHARD' H. VEsEY, a 'citizen of the United States of America, residing at Idaho Springs, in the coutyof Clear Creek and State of Colorado, have invented certain new and useful Improvements in Tamping-Plug's; and Ido declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in tamping-plugs of the class set forth in my pending application, Serial No. 699,223.

My mprOved'tamping-plug is formed from a cylindrical piece of wood,which is first bored longitudinally to form a fuse #opening and then sawed diagonally until the wedge-shaped parts on opposite sides of the saw-cut are nearly severed, enough of the Wooden fiber, however, being left uncut to hold the two parts together temporarily for convenience of handling and to facilitate insertion in the drill-hole of the rock, the saw-cut extending'.

into the f use-openin g, the arrangement being such that when the two parts are separated the portion of the fuse-opening in one partis open on one side to allow the said part to move away from the fuse without disturbing the latter. This uncut portion of the wood is at the outer extremity of the plug and may be easily broken by a hammer-blow after the plug is inserted. The piece of the plug having its thick end outermost is then driven inwardly and the plug fastened in the hole by a wedging action, since the inclined faces formed by the diagonal sawcut are in en-l gagement with each other.

The invention will now be described in detail, reference being made to the accompanying drawings, in which is illustratedan embodiment thereof.

In the drawings, Figure -1 is a. side eleva. tion of myimproved tamping-pluo'. Fig. 2 is a longitudinal section taken through the same. Figs. and 4 are sections taken on th lines X X and Y Y, respectively.l Figs. 5 am 6 arevdetail views of the two wedge-shape parts o'f the tampingplug shown separater from each other. Y

Similar reference characters indicating cor responding-parts in the views, let the nuniera 5 designate the plug, which is sawedon tlm diagonal line 6 to a point 7, the unsawed par 8. which is indicated byafdotted line, "(se Fig. 1,) being only of sufficient strength tr hold the two parts 5 and `5 temporarily to gether. When the plug is inserted, the un cut end is outermost. i It will be, readilyvun del-stood that a blow delivered upon the thiol end A of the part 5V will break the uncu fiber 8 and allow the part 5c to move inwardly whereby the plug is wedged tightly in th drill-hole. The thin endof the part 5F is c'u 01T, as show at B, to prevent it from` coming in contact w th the powder as it is driven in wardly toward` the dynamite charge.

The fuse-opening C, which entends entirelg through the plu g, is formed to one side there of, so that only a small portion of it is in th( part 5. This portion of the fuse-opening ir the part 5c is open on one side (see Fig. 6) t( permit the part 5. to move awayfromw'thi fuse without disturbing it as the said par moves inwardly in the performance of it: function. The cap 9, which is located in th( part 5 at the inner extremity of the fuseopening, is connected with the fuse by mean: of a piece of tube 10,. composed of rubber o1 similar material, which forms a water-tight joint, preventing the water from entering the cap around the fuse. V

Having thus described my invention, what I claim is 1. A tamping-plug provided with a fuseopening extendingI longitudinally therethrough, said plug being sawed diagonally nearly through, enough material being left uncut to hold the two wedge-shaped parts together, the saw-cut extending into the fuse opening, the arrangement being such that when the two parts are separated the portion of the fuse-opening in one part is open on one from the fase without distubing the during the tightening operation.

RICHARD H. VESEY.

Witnesses:

A. J. OBRIEN, Y NELEIE G. DANIELS.

In testimony whereof I affix my signatiire in presence of two witnesses. 

